Issue similar to http://aspnetwebstack.codeplex.com/workitem/247, but request's body contains same encoded file in the two form-data parts. ASP.NET Web API (RC), code same as in the 247. Request body in the attachment.

Exception:

Unexpected end of MIME multipart stream. MIME multipart message is not complete.

System.Net.Http.Formatting
at System.Net.Http.Formatting.Parsers.MimeMultipartBodyPartParser.<ParseBuffer>d__0.MoveNext()
at System.Net.Http.HttpContentMultipartExtensions.MoveNextPart(MultipartAsyncContext context)
at System.Net.Http.HttpContentMultipartExtensions.MultipartReadAsyncComplete(IAsyncResult result)
at System.Net.Http.HttpContentMultipartExtensions.OnMultipartReadAsyncComplete(IAsyncResult result)